#define    _CRT_SECURE_NO_WARNINGS 1
#include"Date.h";
Date& Date::operator+=(int day)
{
	_day += day;
	while (_day > GetMonthDay(_year, _month))
	{
		_day -= GetMonthDay(_year, _month);
		++_month;
		if (_month == 13)
		{
			_year++;
			_month = 1;
		}
	}

	return *this;
}

// d1 + 100
Date Date::operator+(int day)
{
	Date tmp(*this);
	tmp += day;

	return tmp;
}

void Date::Print()
{
	cout << _year << "-" << _month << "-" << _day << endl;
}

// ++d1
Date& Date::operator++()
{
	*this += 1;
	return *this;
}

// d1++
Date Date::operator++(int)
{
	Date tmp(*this);
	*this += 1;

	return tmp;
}

// d1 < d2
bool Date::operator<(const Date& d)
{
	if (_year < d._year)
	{
		return true;
	}
	else if (_year == d._year
		&& _month < d._month)
	{
		return true;
	}
	else if (_year == d._year
		&& _month == d._month
		&& _day < d._day)
	{
		return true;
	}
	else
	{
		return false;
	}
}

bool Date::operator==(const Date& d)
{
	return _year == d._year
		&& _month == d._month
		&& _day == d._day;
}

// d1 <= d2
bool Date::operator<=(const Date& d)
{
	return *this < d || *this == d;
}

bool Date::operator>(const Date& d)
{
	return !(*this <= d);
}

bool Date::operator>=(const Date& d)
{
	return !(*this < d);
}